Table 1.
Demographics and injury related variables of apolipoprotein E (APOE) ɛ4 +/−mild traumatic brain injuries (MTBIs) n = 123.
| Variables | Overall | APOEɛ4(−) | APOEɛ4(+) | p-Value |
|---|---|---|---|---|
| (n = 123) | (n = 75) | (n = 48) | ||
| Age years, mean (SD) | 39.3 (14.0) | 40.7 (14.2) | 37.3 (13.6) | 0.19 |
| Gender (n, %) | ||||
| - male | 75 (61) | 45 (60) | 30 (62) | 0.78 |
| - female | 48 (39) | 30 (40) | 18 (38) | |
| Education (years) | 14.7 (2.8) | 14.9 (2.5) | 14.3 (3.3) | 0.33 |
| Mechanism of injury (n, %) | ||||
| - Traffic accidents | 52 (42) | 31 (41) | 21(43) | 0.63 |
| - Falls | 46 (37) | 31 (41) | 15 (31) | |
| - Violence | 13 (11) | 7 (10) | 6 (13) | |
| - Other | 12 (10) | 6 (8) | 6 (13) | |
| GCS | ||||
| 13 | 6 (5) | 4 (5) | 2 (4) | 0.55 |
| 14 | 29 (24) | 20(27) | 9 (19) | |
| 15 | 88 (71) | 51(68) | 37(77) | |
| LOC (n, %) | ||||
| - no | 25 (20) | 18 (24) | 7 (15) | 0.21 |
| - yes/unknown | 98 (80) | 57 (76) | 41(85) | |
| PTA (n, %) | ||||
| - no amnesia | 12 (10) | 9 (12) | 3 (6) | 0.29 |
| - yes/unknown | 111 (90) | 66 (88) | 45(94) | |
| Complicated | ||||
| -no | 67 (54) | 41 (55) | 26 (54) | 0.96 |
| - yes | 56 (46) | 34 (45) | 22 (46) | |
| Coil (n, %) | ||||
| -HNS | 37 (30) | 20 (27) | 17 (35) | 0.3 |
| -8HRBRAIN | 86 (70) | 55 (73) | 31 (65) |
GCS: Glasgow Coma Scale; LOC: loss of consciousness; PTA: Posttraumatic amnesia.: p-values: T-test for continuous variables; Chi square for categorical variables.